slartibartfast wrote:
> 320kbps comes from the Tunein "choose stream list and 339kbps from the
> LMS now playing screen.
I don;t get that menu.
When I use Tune-in for BBC Radio 3 - Tune says 320kbps but station plays
MP3 (no HLS) at 128kbps.
So Tune-in is also unreliable.
A while back I looked at the AAC frame in BBC streams. Each frame has
bitrate etc - they are the same for DASH and HLS yet DASH mpd is shown
as round number such as 320, 128, 96000 and 48000.
Yet in the BBC imda feeds they show it differently - same as the HLS
feeds. There is no consistency in how the information is used.
Code:
--------------------
<media type="dash">
<stream physical="$intl" relevance="$global"
url="http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/nonuk/dash_low/ak/bbc_radio_one.mpd";
min-bitrate="50880" max-bitrate="101760" audiosamplerate="48000"
protocol="http" method="unicast" audiocodec="he-aacv1" audiochannels="2"/>
<stream physical="$intl" relevance="$global"
url="http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/nonuk/dash_low/llnw/bbc_radio_one.mpd";
min-bitrate="50880" max-bitrate="101760" audiosamplerate="48000"
protocol="http" method="unicast" audiocodec="he-aacv1" audiochannels="2"/>
<stream physical="$uk" relevance="$global"
url="http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/uk/dash_full/ak/bbc_radio_one.mpd";
min-bitrate="135680" max-bitrate="339200" audiosamplerate="48000"
protocol="http" method="unicast" audiocodec="he-aacv1" audiochannels="2"/>
<stream physical="$uk" relevance="$global"
url="http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/uk/dash_full/llnw/bbc_radio_one.mpd";
min-bitrate="135680" max-bitrate="339200" audiosamplerate="48000"
protocol="http" method="unicast" audiocodec="he-aacv1" audiochannels="2"/>
</media>
--------------------
All that can be said is there are: 4 rates for HLS vlow, low, med and
high and 2 rate for DASH low and full each of which has choice of 2
internal rates (48000 & 96000, 12800 & 32000) .
In case somebody gets picky - MP3 stream are different as they use
44.1kHz - all other use 48kHz sampling.
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